//
//  UIButton+category.m
//  deerkids
//
//  Created by 王昭的Mac Air on 2017/8/28.
//  Copyright © 2017年 wangzhao. All rights reserved.
//

#import "UIButton+category.h"

@implementation UIButton (category)

+ (UIButton *)rightBarButtonWithTitle:(NSString *)title
{
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    button.frame = CGRectMake(0, 0, 44, 44);
    button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentRight;
    [button setTitle:title forState:0];
    button.titleLabel.font = [UIFont systemFontOfSize:14];
//    [button setTitleColor:MID_GRAY_COLOR forState:0];
    [button setTitleColor:BASE_COLOR forState:0];
    return button;
}


- (void)attributeFontSize:(CGFloat)fontSize textColor:(UIColor *)textColor backgroundColor:(UIColor *)backgroundColor
{
    self.titleLabel.font = [UIFont systemFontOfSize:fontSize];
    [self setTitleColor:textColor forState:0];
    
    if (backgroundColor) {
        [self setBackgroundColor:backgroundColor];
    }
}

//button 有边框，文字颜色，背景色为白色
- (void)attributeFontSize:(CGFloat)fontSize textColor:(UIColor *)textColor borderWidth:(CGFloat)borderWidth borderColor:(UIColor *)borderColor radius:(CGFloat)radius
{
    self.backgroundColor = [UIColor whiteColor];
    self.titleLabel.font = [UIFont systemFontOfSize:fontSize];
    [self setTitleColor:textColor forState:0];
    self.layer.borderWidth = borderWidth;
    self.layer.borderColor = borderColor.CGColor;
    self.layer.cornerRadius = radius;
}

//button 无边框，文字颜色，有背景色
- (void)attributeFontSize:(CGFloat)fontSize textColor:(UIColor *)textColor radius:(CGFloat)radius background:(UIColor *)backgroundColor
{
    self.titleLabel.font = [UIFont systemFontOfSize:fontSize];
    [self setTitleColor:textColor forState:0];
    self.layer.cornerRadius = radius;
    self.backgroundColor = backgroundColor;
}



- (void)layoutButtonWithEdgeInsetsStyle:(MKButtonEdgeInsetsStyle)style
                        imageTitleSpace:(CGFloat)space
{
    //    self.backgroundColor = [UIColor cyanColor];
    
    /**
     *  前置知识点：titleEdgeInsets是title相对于其上下左右的inset，跟tableView的contentInset是类似的，
     *  如果只有title，那它上下左右都是相对于button的，image也是一样；
     *  如果同时有image和label，那这时候image的上左下是相对于button，右边是相对于label的；title的上右下是相对于button，左边是相对于image的。
     */
    // 1. 得到imageView和titleLabel的宽、高
    CGFloat imageWith = self.imageView.frame.size.width;
    CGFloat imageHeight = self.imageView.frame.size.height;
    
    CGFloat labelWidth = 0.0;
    CGFloat labelHeight = 0.0;
    if ([UIDevice currentDevice].systemVersion.floatValue >= 8.0) {
        // 由于iOS8中titleLabel的size为0，用下面的这种设置
        labelWidth = self.titleLabel.intrinsicContentSize.width;
        labelHeight = self.titleLabel.intrinsicContentSize.height;
    } else {
        labelWidth = self.titleLabel.frame.size.width;
        labelHeight = self.titleLabel.frame.size.height;
    }
    
    // 2. 声明全局的imageEdgeInsets和labelEdgeInsets
    UIEdgeInsets imageEdgeInsets = UIEdgeInsetsZero;
    UIEdgeInsets labelEdgeInsets = UIEdgeInsetsZero;
    
    // 3. 根据style和space得到imageEdgeInsets和labelEdgeInsets的值
    switch (style) {
        case MKButtonEdgeInsetsStyleTop:
        {
            imageEdgeInsets = UIEdgeInsetsMake(-labelHeight-space/2.0, 0, 0, -labelWidth);
            labelEdgeInsets = UIEdgeInsetsMake(0, -imageWith, -imageHeight-space/2.0, 0);
        }
            break;
        case MKButtonEdgeInsetsStyleLeft:
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, -space/2.0, 0, space/2.0);
            labelEdgeInsets = UIEdgeInsetsMake(0, space/2.0, 0, -space/2.0);
        }
            break;
        case MKButtonEdgeInsetsStyleBottom:
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, 0, -labelHeight-space/2.0, -labelWidth);
            labelEdgeInsets = UIEdgeInsetsMake(-imageHeight-space/2.0, -imageWith, 0, 0);
        }
            break;
        case MKButtonEdgeInsetsStyleRight:
        {
            imageEdgeInsets = UIEdgeInsetsMake(0, labelWidth+space/2.0, 0, -labelWidth-space/2.0);
            labelEdgeInsets = UIEdgeInsetsMake(0, -imageWith-space/2.0, 0, imageWith+space/2.0);
        }
            break;
        default:
            break;
    }
    
    // 4. 赋值
    self.titleEdgeInsets = labelEdgeInsets;
    self.imageEdgeInsets = imageEdgeInsets;
}

@end
